Chapter 4. Orthographic Views

Chapter Objectives

Learn about orthographic views

Learn ANSI standards and conventions

Learn how to draw section and auxiliary views

4-1 Introduction

Orthographic views are two-dimensional views used to define a three-dimensional model. More than one orthographic view is needed to define a model unless the model is of uniform thickness. Standard practice calls for three orthographic views, a front, top, and side view, although more or fewer views may be used as needed.

There are two sets of standards used to define the projection and placement of orthographic views: the American National Standards Institute (ANSI) and the International Organization for Standardization (ISO). The ANSI calls for orthographic ...

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